GLSA-200502-09 : Python: Arbitrary code execution through SimpleXMLRPCServer

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Gentoo Linux Security Advisory GLSA 200502-09.
#
# The advisory text is Copyright (C) 2001-2018 Gentoo Foundation, Inc.
# and licensed under the Creative Commons - Attribution / Share Alike 
# license. See http://creativecommons.org/licenses/by-sa/3.0/
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(16446);
  script_version("1.17");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/06");

  script_cve_id("CVE-2005-0089");
  script_xref(name:"GLSA", value:"200502-09");

  script_name(english:"GLSA-200502-09 : Python: Arbitrary code execution through SimpleXMLRPCServer");
  script_summary(english:"Checks for updated package(s) in /var/db/pkg");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Gentoo host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The remote host is affected by the vulnerability described in GLSA-200502-09
(Python: Arbitrary code execution through SimpleXMLRPCServer)

    Graham Dumpleton discovered that XML-RPC servers making use of the
    SimpleXMLRPCServer library that use the register_instance() method to
    register an object without a _dispatch() method are vulnerable to a
    flaw allowing to read or modify globals of the associated module.
  
Impact :

    A remote attacker may be able to exploit the flaw in such XML-RPC
    servers to execute arbitrary code on the server host with the rights of
    the XML-RPC server.
  
Workaround :

    Python users that don't make use of any SimpleXMLRPCServer-based
    XML-RPC servers, or making use of servers using only the
    register_function() method are not affected."
  );
  # http://www.python.org/security/PSF-2005-001/
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.python.org/news/security/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security.gentoo.org/glsa/200502-09"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"All Python users should upgrade to the latest version:
    # emerge --sync
    # emerge --ask --oneshot --verbose dev-lang/python"
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:python");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2005/02/08");
  script_set_attribute(attribute:"plugin_publication_date", value:"2005/02/14");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2005-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Gentoo Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Gentoo/release", "Host/Gentoo/qpkg-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("qpkg.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Gentoo/release")) audit(AUDIT_OS_NOT, "Gentoo");
if (!get_kb_item("Host/Gentoo/qpkg-list")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;

if (qpkg_check(package:"dev-lang/python", unaffected:make_list("ge 2.3.4-r1", "rge 2.3.3-r2", "rge 2.2.3-r6"), vulnerable:make_list("le 2.3.4"))) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:qpkg_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = qpkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "Python");
}